similar to: isohybrid has 2 variants

> Hi, > > Ady: > > Since both included variants are currently different, and both > > variants have problems > > I am not aware of problems of the perl version. It is just lacking > the newer features which support EFI/GPT and Mac/APM. > The known bugs of isohybrid.c are with those newer features. > http://www.syslinux.org/archives/2012-May/017843.html >

> Hi, > > > Not being compatible with EFI/GPT is already a problem for the Perl > > variant. > > The relation of both is: > > isohybrid.in/.pl is being left behind. > http://git.kernel.org/cgit/boot/syslinux/syslinux.git/tree/utils/Makefile > has: > SCRIPT_TARGETS += isohybrid.pl # about to be obsoleted > > isohybrid.c replaces it feature-wise

>What I reminder from it: > > The first "isohybrid" was in perl. > But that made perl a run-time dependency. > > A compiled version of "isohybrid" removed that > run-time dependency on perl. > > >What I think of it: > > The Perl variant of isohybrid should be removed > from the source tree. One advantage of the Perl one for me

I'm going to get the hang of this mailing list eventually. Apologies for any duplicate emails.. >Ian Bannerman: >> While I did know the .exe variant was not official / untrusted, >Is there a special reason for this ? (Except the known bugs which affect Linux binaries, too.) Not really. I had never found a convincing source for it and had seen previous list entries like this

Hi, Ady: > Since both included variants are currently different, and both > variants have problems I am not aware of problems of the perl version. It is just lacking the newer features which support EFI/GPT and Mac/APM. The known bugs of isohybrid.c are with those newer features. http://www.syslinux.org/archives/2012-May/017843.html

> Hi, > > > All the "isohybrid.exe" I know of are based on the Perl variant. > > I just got one from > http://www.filewatcher.com/m/isohybrid.exe.39568-0.html > > Its strings seem not to stem from isohybrid.pl. > > Digging in slitaz source brought a shell script (that would be > variant #5 then): >

> Hi, > > i have written an introduction to isohybrid and put it on > the discussion page of the ISOLINUX wiki. > > http://www.syslinux.org/wiki/index.php/Talk:ISOLINUX#Proposal_for_description_of_isohybrid > > Review and proposals are appreciated. > > The reference to "above mkisofs command" anticipates the final > position of this text at the end

> Hi, > > Ady: > > _ Wiki should use more user-friendly language and "less deep" > > technical information. > > I tried to stay at the surface of isohybrid. > (Didier already asked for more depth about expert options.) My interpretation of Didier's questions is less depth and more user-friendly practical commands for end-users. Our points of view

Hi, On 23/06/2014 12:07, Thomas Schmitt wrote:> Hi, > > i have written an introduction to isohybrid and put it on > the discussion page of the ISOLINUX wiki. > > http://www.syslinux.org/wiki/index.php/Talk:ISOLINUX#Proposal_for_description_of_isohybrid > > Review and proposals are appreciated. Caveat emptor: this is a review by an end user (not a developer), who

Hi, hpa: > The right thing to do is compile it with #define _FILE_OFFSET_BITS 64 > and change fseek to fseeko with the appropriate type being off_t. And for GPT names it should really use 16-bit UTF-16LE characters and not 8-bit characters padded up by the same number of random bytes from the program memory. See e.g.:

When call isohybrid with option '-u', it overflows on a 32 bits host. It seeks to 512 bytes before the end of the image to install gpt header. If the size of image is larger than LONG_MAX, it overflows fseek() and cause error: isohybrid: wrlinux-image-x86-64-20140505110100.iso: seek error - 8: Invalid argument Check the offset and call fseek() multi-times if offset is too large.

Op 2014-06-20 om 15:56 schreef Ady: > > The Perl variant, isohybrid.in, seems to be getting left behind > regarding several patches. I don't recall whether there is at least > some mention in the isohybrid docs about the existence of 2 variants > included in Syslinux (and that is in addition to other isohybrid > methods outside Syslinux). Is there any reference? >

When call isohybrid with option '-u', it overflows on a 32 bits host. It seeks to 512 bytes before the end of the image to install gpt header. If the size of image is larger than LONG_MAX, it overflows fseek() and cause error: isohybrid: image-x86-64-20140505110100.iso: seek error - 8: Invalid argument Replace fseek with fseeko to fix this issue. Signed-off-by: Kai Kang <kai.kang at

Op 2014-06-21 om 21:19 schreef intrigeri: > Hi, > > Ian Bannerman wrote (21 Jun 2014 15:49:51 GMT) : > > One advantage of the Perl one for me is that I can run it on Windows. > > We at Tails rely on isohybrid.pl for installing on OSX: > https://tails.boum.org/doc/first_steps/installation/manual/mac/ > > Of course, this does not mean that the current syslinux team

Hi, i am trying to document the MBR selection by isohybrid option --partok. I assume it is related to "altmbr.bin" as described in http://www.syslinux.org/wiki/index.php/Mbr But there i read "altmbr.bin [...] boots from a partition with fixed number, see below." The "see below" probably refers to "The altmbr.bin (all 3 variants) is only 439 bytes long, -- one

> Hi, > > > For instance, if a common user reads a section about a general > > concept, then introducing commands of specific tools (even with the > > intention of clarity) could make the reader (mis)understand that such > > tool or such commands are part of the general concept. > > The first example with "xorriso ... -isohybrid-mbr" serves the

Hi, > All the "isohybrid.exe" I know of are based on the Perl variant. I just got one from http://www.filewatcher.com/m/isohybrid.exe.39568-0.html Its strings seem not to stem from isohybrid.pl. Digging in slitaz source brought a shell script (that would be variant #5 then): http://hg.slitaz.org/wok/file/313b384e2a06/syslinux/stuff/tools/isohybrid.sh But isohybrid.exe must

Hi, my proposal is based on a mathematical proof (see mail before) and yours is correct too. They cannot but match. Let's inspect your examples: Ady wrote: > ISO size: 1'085'736'960 bytes ( > 1GiB) This are exactly 132 cylinders of 255x63. 132 is divisible by 4. So there is no padding needed. > Cylinders (1st attempt)=132 > [...] > 2120580 / 4 = 530145, so

> > I am still interested in improving the isohybrid wiki > and will watch for pointers to descriptions of the FAT > production process (with GRUB/GRUB2 if not with SYSLINUX). > > If no such descriptions appear within the next weeks, > then i plan to state in > http://www.syslinux.org/wiki/index.php/Isohybrid#UEFI > > "The SYSLINUX project cannot yet provide

I'll file a ticket once fedorahosted is back online. The request is to port the isohybrid script, in the syslinux package, from perl to C (and of course submit it upstream). This would let syslinux drop its dependency on perl, which would save considerable space. $ wc -l git/syslinux/utils/isohybrid.in 258 git/syslinux/utils/isohybrid.in As this is doing some simple structure unpacking